EP 1060496 A1 20001220 - METHOD AND X-RAY DEVICE USING PULSE HIGH VOLTAGE SOURCE
Title (en)
METHOD AND X-RAY DEVICE USING PULSE HIGH VOLTAGE SOURCE
Title (de)
Verfahren und Vorrichtung für Radiophie unter Anwendung einer Hochspannungsimpulsquelle
Title (fr)
PROCEDE ET APPAREIL DE RADIOGRAPHIE METTANT EN OEUVRE UNE ALIMENTATION EN HAUTE TENSION D'IMPULSION
Publication
Application
Priority
- US 9904940 W 19990305
- US 7705798 P 19980306
- US 6784498 A 19980427
Abstract (en)
[origin: WO9945562A1] An apparatus and method for exposing a treatment site in a patient to x-ray radiation is described that uses a pulse voltage source (105), where the x-ray emitter (101) employs a cold cathode. The invention may further include a current sensor (111) for measuring a current through the x-ray emitter (101), and, optionally, a current integrator (113) connected to the current sensor (111). Each voltage pulse may be discontinued when a predetermined amount of charge has passed through the emitter (101). The step of moving an x-ray emitter (101) past a treatment area at a rate determined by the amount of charge that has passed through the emitter (101) is also described. The present invention also includes an x-ray emitter device (101) with rectangular voltage pulses added to a base direct current voltage. Another step of the invention may be applying a voltage pulse cycle to the x-ray emitter (101) where a duration of the pulse is 2-5 times lower than a thermal relaxation time of an emitter (101).
IPC 1-7
IPC 8 full level
A61N 5/10 (2006.01); H01J 35/22 (2006.01); H05G 1/20 (2006.01); H05G 1/32 (2006.01); H05G 1/34 (2006.01)
CPC (source: EP US)
A61N 5/1001 (2013.01 - EP US); H05G 1/20 (2013.01 - EP US); H01J 2201/304 (2013.01 - EP US); H01J 2235/164 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9945562 A1 19990910; AU 2987099 A 19990920; EP 1060496 A1 20001220; JP 2002506273 A 20020226; US 6069938 A 20000530
DOCDB simple family (application)
US 9904940 W 19990305; AU 2987099 A 19990305; EP 99911162 A 19990305; JP 2000535022 A 19990305; US 6784498 A 19980427